The versatility of light emmitting conjugated polymers in terms of optoelectronic properties is enormous but tailoring of other essential properties has been relatively limited. In other fields such a problem would a problem would be rectified using material formulations. However, the need to maintain high optoelectronically compatible materials is demonstated. Additive molecules that are compatible with a family of luminescent polymers are presented and their performance in a light-emmited diode configuration is demonstrated. This formulation is aimed to adjust the glass transition temperature, maintain/improve film-forming ability, and that could be used to produce wavelength lasers or full-colour displays. The patterning ability is shown via the construction of a single pixel that is half green and half orange.